Copper-Catalyzed Enantioselective Additions to Oxocarbenium Ions: Alkynylation of Isochroman Acetals
作者:Prantik Maity、Harathi D. Srinivas、Mary P. Watson
DOI:10.1021/ja207585p
日期:2011.11.2
developed an enantioselective, copper(I)-catalyzed addition of terminal alkynes to racemic isochroman acetals. This method is one of the first transition-metal-catalyzed approaches to enantioselective additions to prochiral oxocarbeniumions. In this reaction, TMSOTf is used to form the oxocarbeniumion in situ under conditions compatible with simultaneous formation of the chiral copper acetylide. By